Change RSS link to the correct one

Fixes qiime/qiime#1082
Merge pull request #13 from ElDeveloper/forum_rss

Change RSS link to the correct one
fixes #14 and #10
attempt to address #10
still trying to fix #10
still trying to fix #10
Modified the <div> sections of the Resource page to fix PyCogent logo location
deleted commented out <div> lines
Merge pull request #15 from walterst/fix_resource_page_pycogent_logo

Modified the <div> sections of the Resource page to fix PyCogent logo lo...
moved previous release versions
added 1.8.0 documentation
added new AMI id
updated to remove broken ami
Merge pull request #16 from qiime/180-release

updated website for 1.8.0
Fix qiime.org/1.7.0/ broken link

Fixes #18.
Merge pull request #19 from jrrideout/issue-18

Fix qiime.org/1.7.0/ broken link